Bludgeon said:
I love the way you've been slowly killing all the "peripheral" characters....
Heh-- you guys sure are bloodthirsty!

I have to admit, I took a certain gruesome pleasure killing off some of the "redshirts." (It was easier when they were nameless sailors, though... harder to kill off an established character) Thanks for the praise, and here's the final chapter of Book III...
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Book III, Part 33
The final corridor ran deeper into the island for about fifty yards before slanting upward into a difficult but manageable ascent. The walls of the passageway were smooth, but did not bear the mark of tools. Lok commented that it might have been formed by volcanic action long ago.
“We must be nearing the surface,” Benzan commented, and in fact they could shortly see a glow up ahead, which resolved into a larger space opening up off the corridor up ahead.
The companions slogged up the final stretch of sloping passage to emerge into a large natural chamber, rather smaller than the cavern where they’d fought the kopru but significant nonetheless, perhaps eighty feet across at its widest point. In the rear of the place the uneven natural rock gave way to worked stone, including a cracked dome through which several bright shafts of sunlight could be seen filtering down from above.
“Looks like some sort of temple,” Delem commented, as they cautiously made their way into the cavern. As they drew nearer they could see that the worked area was full of cracks and debris, with the walls themselves jutting at uneven angles and the floor rising or falling a few feet as the massive stone blocks stood sundered by some ancient calamity.
“It looks like it was built someplace above, then fell into this cavern at some point,” Lok said, as he analyzed the pattern of the damage. On reaching the edge of the area covered by the dome they could see that several passages had once led off from the chamber, all of which now appeared to be completely choked by rubble.
“It’s nice to see sunlight again,” Dana said, and Elly, standing beside her, added her assent.
“What’s that back there?” Cal said, gesturing toward a recessed area in the back of the chamber. A deep alcove had apparently weathered the damage wrought to the temple better than the dome area, and they crossed the cracked stone to that space.
The alcove was a deep quarter-sphere that extended perhaps thirty feet back. Thin wisps of plant growth that had grown out of the cracks in the dome above formed a gossamer-like curtain that left its far end draped in shadows. The stonework here was subtly different, the curving walls of the alcove fashioned from interlocking reddish bricks that had managed to maintain their overall integrity against the passing of time. And in the rear of the place…
“The Well of Worlds, I gather,” Benzan said.
The Well was a portal, a familiar sight to those with knowledge of the arcane secrets of Faerûn. It was fashioned in the shape of an archway, perhaps ten feet tall at its apex, with nothing but a blank wall of featureless black stone beyond it. The arch itself was difficult to identify, its gray-green material not quite metal, not quite stone. It resembled slightly the material used in the chain shirts they’d taken from the pirates they’d defeated on one of the smaller islands, mail that Elly still wore.
“Well, now what do we do?” Benzan asked, but Cal was already approaching the archway, walking carefully as though each step might spring a deadly trap. No dangers presented themselves, however, and the others watched as the gnome examined the arch and the black stone beyond. He summoned a magical light to illuminate the area, but did not touch anything as of yet.
“Lok, tell me what you think,” the gnome finally said.
The genasi approached, and like Cal gave the arch a careful examination. “Strange,” he said. “I cannot tell what it is made of.”
“Delem, can you detect for magic?” the gnome said. As the sorcerer approached, however, Benzan shrugged and walked up to the other side of the archway, and reached out and touched it. Cal cringed, but nothing terrible happened to the tiefling—this time.
“Hmm… feels a little warm,” Benzan said.
“One of these days—” Dana began, but she was interrupted as a voice filled their minds, sounding clearly as if someone was right in front of them, speaking in a soft voice.
I am the Well of Worlds, it said.
I am the bridge between worlds, a guidepost on the border between realities. Speak, traveler, and state your destination.
“Well, now we’re getting somewhere,” Benzan said. “We wish to return to Faerûn,” he said aloud.
“We might want to be a little more specific,” Cal said. “Where exactly do we want to go back to?”
The companions exchanged a glance, and realized that they hadn’t really considered that question, each of them focused more on getting here, and back to their own world, than the precise destination.
“Our original destination was Chult,” Lok said.
“Yes, but Ruath’s dead,” Benzan pointed out. “Even if we could find whoever it was she was going to meet, her message died with her.”
“We could return to the Western Heartlands,” Delem suggested. “Elturel, or Baldur’s Gate, or anyplace else we wanted to visit.”
“Anywhere would be fine, as long as it’s home, and not this place,” Elly said.
“Why don’t we just return to Baldur’s Gate, and then we can discuss where we want to go from there,” Benzan said. “And maybe Lady Beldarin can do something for Ruath.”
The companions nodded at the tiefling’s unselfish suggestion. Once he’d gauged everyone’s assent, Cal turned to face the arch. “Gateway, we wish to return to our home plane, to the continent of Faerûn on the world of Abeir-Toril. Please take us to the city of Baldur’s Gate, on the Sword Coast of western Faerûn.”
The portal was silent for a moment, and then each of them could feel a faint touch on the edges of their mind, as if the sentient gateway was scanning their thoughts for information about their destination.
You seek to travel to an alternative prime material plane, the voice finally told them.
It is difficult to bridge the gap between primes, more difficult even than reaching the outer planes… Your own link to this place can help guide your path, but I cannot assure that you will find the exact destination that you seek.
The blank stone face beyond the arch grew insubstantial as they watched, and the black stone was replaced by a swirling pattern that resembled wisps of reddish fog caught in a slight breeze. Each of them could feel the energies trapped inside the portal as it came alive, causing their flesh to prickle with goosepimples.
The way is open. Each of you must choose whether to venture the path.
“Well, what do you think?” Benzan asked them.
Cal regarded the mists intently. “Ruath isn’t here,” he said, “but maybe we can still call upon Tymora’s luck on this one. She always said that the Lady never listened to her, and her own luck faltered at the end, but the rest of us won through, in part due to the intervention of the Lady through the agency of her cleric’s hand. And maybe, somewhere we can’t yet understand, Ruath’s keeping an eye on us, lending us a little luck in our time of need.”
He turned and met the gaze of each of them in turn, confirming his own thoughts.
“Let’s go home.”
He stepped through the arch, the others following close behind, the mists swallowing up each of them in turn until silence fell again over the ruined temple on the Isle of Dread.
END OF BOOK III
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